package com.maimang.platform.quartz.utils;

import com.maimang.platform.constant.ScheduleConstants;
import com.maimang.platform.exception.job.TaskException;
import com.maimang.platform.quartz.entity.SysJob;
import org.quartz.*;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

/**
 * @author Rocky
 * @version 1.0.0
 * @classname ScheduleUtils
 * @description 定时任务工具类
 * @date 2019-04-16 14:36
 * @email jintaozhao@qq.com
 */
public class ScheduleUtils {
	private static final Logger log = LoggerFactory.getLogger(ScheduleUtils.class);

	/**
	 * 获取触发器key
	 */
	public static TriggerKey getTriggerKey(Long jobId) {
		return TriggerKey.triggerKey(ScheduleConstants.TASK_CLASS_NAME + jobId);
	}

	/**
	 * 获取jobKey
	 */
	public static JobKey getJobKey(Long jobId) {
		return JobKey.jobKey(ScheduleConstants.TASK_CLASS_NAME + jobId);
	}

	/**
	 * 获取表达式触发器
	 */
	public static CronTrigger getCronTrigger(Scheduler scheduler, Long jobId) {
		try {
			return (CronTrigger) scheduler.getTrigger(getTriggerKey(jobId));
		} catch (SchedulerException e) {
			log.error("getCronTrigger 异常：", e);
		}
		return null;
	}

	/**
	 * 创建定时任务
	 */
	public static void createScheduleJob(Scheduler scheduler, SysJob job) {
		try {
			// 构建job信息
			JobDetail jobDetail = JobBuilder.newJob(ScheduleJob.class).withIdentity(getJobKey(job.getJobId())).build();

			// 表达式调度构建器
			CronScheduleBuilder cronScheduleBuilder = CronScheduleBuilder.cronSchedule(job.getCronExpression());
			cronScheduleBuilder = handleCronScheduleMisfirePolicy(job, cronScheduleBuilder);

			// 按新的cronExpression表达式构建一个新的trigger
			CronTrigger trigger = TriggerBuilder.newTrigger().withIdentity(getTriggerKey(job.getJobId()))
					.withSchedule(cronScheduleBuilder).build();

			// 放入参数，运行时的方法可以获取
			jobDetail.getJobDataMap().put(ScheduleConstants.TASK_PROPERTIES, job);

			scheduler.scheduleJob(jobDetail, trigger);

			// 暂停任务
			if (job.getStatus().equals(ScheduleConstants.Status.PAUSE.getValue())) {
				pauseJob(scheduler, job.getJobId());
			}
		} catch (SchedulerException e) {
			log.error("createScheduleJob 异常：", e);
		} catch (TaskException e) {
			log.error("createScheduleJob 异常：", e);
		}
	}

	/**
	 * 更新定时任务
	 */
	public static void updateScheduleJob(Scheduler scheduler, SysJob job) {
		try {
			TriggerKey triggerKey = getTriggerKey(job.getJobId());

			// 表达式调度构建器
			CronScheduleBuilder cronScheduleBuilder = CronScheduleBuilder.cronSchedule(job.getCronExpression());
			cronScheduleBuilder = handleCronScheduleMisfirePolicy(job, cronScheduleBuilder);

			CronTrigger trigger = getCronTrigger(scheduler, job.getJobId());

			// 按新的cronExpression表达式重新构建trigger
			trigger = trigger.getTriggerBuilder().withIdentity(triggerKey).withSchedule(cronScheduleBuilder).build();

			// 参数
			trigger.getJobDataMap().put(ScheduleConstants.TASK_PROPERTIES, job);

			scheduler.rescheduleJob(triggerKey, trigger);

			// 暂停任务
			if (job.getStatus().equals(ScheduleConstants.Status.PAUSE.getValue())) {
				pauseJob(scheduler, job.getJobId());
			}

		} catch (SchedulerException e) {
			log.error("SchedulerException 异常：", e);
		} catch (TaskException e) {
			log.error("SchedulerException 异常：", e);
		}
	}

	/**
	 * 立即执行任务
	 */
	public static int run(Scheduler scheduler, SysJob job) {
		int rows = 0;
		try {
			// 参数
			JobDataMap dataMap = new JobDataMap();
			dataMap.put(ScheduleConstants.TASK_PROPERTIES, job);

			scheduler.triggerJob(getJobKey(job.getJobId()), dataMap);
			rows = 1;
		} catch (SchedulerException e) {
			log.error("run 异常：", e);
		}
		return rows;
	}

	/**
	 * 暂停任务
	 */
	public static void pauseJob(Scheduler scheduler, Long jobId) {
		try {
			scheduler.pauseJob(getJobKey(jobId));
		} catch (SchedulerException e) {
			log.error("pauseJob 异常：", e);
		}
	}

	/**
	 * 恢复任务
	 */
	public static void resumeJob(Scheduler scheduler, Long jobId) {
		try {
			scheduler.resumeJob(getJobKey(jobId));
		} catch (SchedulerException e) {
			log.error("resumeJob 异常：", e);
		}
	}

	/**
	 * 删除定时任务
	 */
	public static void deleteScheduleJob(Scheduler scheduler, Long jobId) {
		try {
			scheduler.deleteJob(getJobKey(jobId));
		} catch (SchedulerException e) {
			log.error("deleteScheduleJob 异常：", e);
		}
	}

	public static CronScheduleBuilder handleCronScheduleMisfirePolicy(SysJob job, CronScheduleBuilder cb)
			throws TaskException {
		switch (job.getMisfirePolicy()) {
			case ScheduleConstants.MISFIRE_DEFAULT:
				return cb;
			case ScheduleConstants.MISFIRE_IGNORE_MISFIRES:
				return cb.withMisfireHandlingInstructionIgnoreMisfires();
			case ScheduleConstants.MISFIRE_FIRE_AND_PROCEED:
				return cb.withMisfireHandlingInstructionFireAndProceed();
			case ScheduleConstants.MISFIRE_DO_NOTHING:
				return cb.withMisfireHandlingInstructionDoNothing();
			default:
				throw new TaskException("The task misfire policy '" + job.getMisfirePolicy() + "' cannot be used in cron quartz tasks", TaskException.Code.CONFIG_ERROR);
		}
	}
}
